50 C. \"peace allegory, base stamp type I, vertical pair from corner margin lower left with sheet number \"06048\" with overprint \"Occupied area North France\", variety \"inverted overprint\", properly franking on letter from, Ghyvelde 14.07.1940\" to Dunkerque with arrival postmark on the back from 15.07.1940, faultless condition, only in small number of pieces known, with sheet number and inverted overprint an extremely scarce variety, expertized Calves, Dreyfuss, Roumet and expertise Lothar Herbst VP (2023) \"the condition is perfect. \", Michel 1.600.-